Double-tread tire.



i. F. JABLONSKI.

DOUBLE TREAD TIRE. APPLICATION mso-swnzo. i915.

- 1,209,442. Patented Dec.19,1916.

.T-L E idem/4,-

BY i V W ATTORNEYS JOHN F. .mienon'sxr, or rnvmcron, NEW messDOUBtE-TREAD TIRE.

To all whom it may concern: Be it known that I, JOHN F. J ABLonsKI, acitizen of the United States, and a resident oflrvington, county ofEssex, and State of.

New Jersey, have invented certain new and useful Improvements inDouble-Tread flires, of which the following is aspecification.

My invention relates to tires, and particu-f larly to improvements inthe securing of a reinforcing cover or tread portion upon pneumaticautomobile tires.

Double tread tires, as they have cometo be known, have been constructed,as far as I am aware, by sewing or cementing upon one casing a secondsimilar casing havmg the bead portion thereof first cut away so asthread or cord, which must be used, where it projects on the inside ofthe inner casing makes a rough line-which chafes the inner tube andproduces leaks therein, and this effect is very much heightened 'wherethere are any patches or irregularities of an sort 80 in the tube. Forthis reason it is wel understood that with double tread tires havingtheir parts secured together by stitching, it

is not practicable to ,use any other than new and heavy inner tubes,which of course, is 85 anitem of considerable added expense.Furthermore, the stitching rots and'breaks out rapidly, and thefastening of the outer t1re soon becomes insecure, and a frayed andunsightly appearanceis presented, and

40 ultimately the outer or covering tire is loosened altogetherand maycome ofl' entirely or. may slip on the inner casing, producing frictionand heat and-thus ruining not onl the outer shoe, but the'shoe insldewhic was intended to be preserved and given longer life.

According to the present invention the outer covering, which ispreferably a tire casingwith the bead portion removed, is provided witha series of metallic i-hooks around its innermost edges, and a rin whichmay be shortened and drawn tight, is passed through the eyes of thehooks and tightened up, thereby securing the reinforcing tread portionsecurely m place, and

' when such reinforcing tread portion be- Specification of LettersPatent. P t t 1 191 Application filed September 20, 1915. Serial No.51,554.

comes worn, it may readily beremoved by loosening the ring and takingoff the worn tread portion and substituting anew or dif ferent onetherefor. The reinforcing covering being securedin this manner withhooks and draw rings on each side, there is no fastening which extendsthrough the inner casing and nothing to chafe the inner tube f whichretains the air and the pressure for holding the tire casing extended.Suchfastening devices are readily applied by any one whenever desired,andthere is no need for the heavy machinery which is requisite for theheavy sewing'operation of sewing through the heavy carcasses of two tirecasings, as is necessary when stitching is resorted to for holding thecasings together. A motorist having a small 'package of hooks andmembers for making up the rings can make the attachment in a very'shorttime and at practically no expense, and it be-' comes possible formotorists'to make eifective reuse of worn casings and to cut down theirtire bill very materially.

With the foregoing and related objects in view, my invention consists inthe combinations and improvements herem set forth and claimed.

For the purpose of givingan' understand- 7 ing and clear disclosureof myinvention, I have shown in the accompanying drawlng an embodimentthereof, but it is to be understood that the same is for illustrationonly.

In the said drawin forming a part of this specification, and --w ereinthe same refer-- ence numerals are applied to uniformly desarts,

igna'te the Same Partsthmugliout Figurel is a fragmentary side viewshowing a portion of a tire with the tread coveringheld in place inaccordance with one form of my invention. view taken on the line 2-2,Fig. 1. Fig. 3, is a-face view of one formof complete holding ring inaccordance with my invention. Fig. 4 is a fragmentary viewartly in crosssection and showing the pre erred form of turnbuckle. Fig. 5 is anelevational view .ofa hook for attachment to a tire covering. Fig. 6 isa side view of such a hook showing Fig. 2 is a cross-sectional.

int

the eye in closed position, and Fig. 7 is an enlarged side view of asnaphook for eng fg a loop in the end of a spring.

erence numeral 10 is applied to designate the tire casing which is to bereinforce 11 designates. the reinforcing or covering member-which, inthe form shown, consists of a tire casin similar to the casing 10 buthaving the ead ortion thereof cut off or removed. As wil be understood,such therein near the edges thereof. These holes 14 are preferablyarranged in pairs about as shown, in order to enable the use of theparticular form. of hook member which I prefer to use. Preferably in theholes 14 are placed eyelets 15 similar to those used in shoe uppers, andsuch eyelets when prescut give increasedwear and reduce the liability ofthe hooks tearing out in a manner which will be understood. The eyeletsmay bedispensed with, however, if desired. The hook members, which areformed of wire of any convenient cross-section, round wire r beingillustrated in the present showing,

are designated by the reference numeral 16. These hook members areformed by first bending a piece of wire of the proper length-about fourto sixinchesupon itself at the middle. This provides two strands of wire'oined to ether at one endand with the stran are bent over to form thehooks 21, 21, and these hooks are inserted through the remaining en sfree. The end where the strands are joined together is turned back"'on-itself to form an eye 17, and such eye mag be partly open, asshownin Figs. 2 an 5, or substantially closed, as shown at 18 n Fig. 6. Thetwo strands are separated so as to diverge at an an 1e to one another,and they may diverge at t e back of the 6 6 asshown in Fig. 1, or theymay extend 01 a distance substantially. parallel, asshown at 19, 19,Fig.5, and then diverge as shown at 20, 20 on this fi they diverge mayvaried in practice, but

I preferto form the angle about as shown,

thus providing'two divergin free ends of the wire which may be secure tothe casing at so arated points. The two divergent o nings' 14, 14 in thecoverin member provided for that purpose, an these hooks arethereafterpreferably closed, as shown, (Fig. 2) thisbeinggaccomplishedas by means of a pair oilpliers and in a manner which will be reay'understood.

The doubled-ends of the hook members 16 may not have a complete eyeformed therein but may be merelyent back in the form 0 an o L in w "chcase the ring holding member can be slid directly into the open hooks ina man-' construction that they may through the eyes 18 in the hooks 16.

e. The angle at which en hook 17, as shown in Figs. 2 and 5,

ner which will be obv ious. I prefer, howi ever, to form the hookmembers with eyes 18 by bending the doubled ends. thereof completelyover or substantiall so, and with such arrangement it is requisite thatthe members forming the rings may be of such have shown a form of rinmember in which this result may be readi y secured, and, while a largernumber of sections maybe used if desired, the same, as shown, consistsprincipally of two substantially semi-circular sections of rod or wire22, 23 which are secured together by means of. a turnbuckle 24 themsubstantially opposite the turnbuckle 24. The turnbuckle may be of theordinary form, but I prefer to use the construction illustrated, inwhich the turnbuckle is provided at one end with a threaded bore 26. and

at the opposite end is closed except for a:

reduced axial opening 27. The ring member 23 has a head 28, and thesamemay be inserted through the threaded openin 26 and the opening 27,except that the hea 28 can not pass through the openin 27 in the unassed .8

and have a spring 25 interposed between threaded end of the turnbuc e.This ring member 23 is preferably provided witha screw-thread 29 at theend opposite the head 28 for a purpose presently to be described. Theremaining ring member 22 has a screw-thread 30 on one end designed toenter and be screwed into the threaded opening 26 in the turnbuckle, andon its op-. posite end is provided with means'for securing it to thespring, as a loop 31.

The threaded end, 29 of the ring member 23 is provided with means forsecuring the same to the spring 25, and the same may consist of a hook'32 having a threaded aperture by which it may be screwed on to thethreaded end 29 ofthe ring member 23, and this may take the form .of asnap book, as shown in Fig. 7, a leaf spring 33 being provided forpreventing the spring from accidentally becoming disengaged, though thissnap hook feature isnot'essential.

From the foregoing description the mannerof using improved fasteningmembers in accordance with my invention for making up double tread tireswill be readily understood. The covering member being at hand andordinarily consisting of a discarded casing with the bead removed, theopenings 14' are provided in such covering member and the hooks securedtherein, the openings being preferably lined with eyelets 15. With;

the open form of hook shown in Figs. 2 and 5 any form of ring member forbeing rethe covering member in place may be made use'of. Where the hooksare provided with: 7 the closed eyes '16, however, ring members) whichmay pass longitudinally through said 12 s ceived withinthe hooks andthereby holding the loop 31 on the ring the ring and to draw the.

. ably alike, and that a double set of hooks and rings is preferablyprovided, one for be evident,

eyes are to be provided, and theform of ring illustrated aflordsaconstruction with which this may be accomplished. Thesection 23 .withthe screw-threaded end 29 'in advance may be assed through the eyes insubstantially of the hooks, it being understood that this member ispassed through the tumbuck l fiefore being passed through any of thehooks. The remaining member 22 is passed through the eyes in the remhooks with thescrewthreaded end 30 in advance, and when the turnbuckleand the eyes have been properly strung on the ring members, the hook 32may be secured on the threaded end of the member 23, and this in turnsecured to the spring 25, which at its opposite end is secured to member23, whereupon the threaded end of the turnbuckle may be screwed on thethreaded end 30 of the ring member 22 and will serve to tighten hooks upsecurely and hold the covering member tightly and securely in place. Bythe'provision of the spring 25, the holding action thus secured isnot'absolutely rigid, but it becomes possible 'for the ring to give slightlyto prevent the tearing out of the hooks 16, as may happen if such springwere not provided in the fastening ring.

It will be under tood that the arrangement on each side of the casing ispreferone s1de and the other. for the other side of each tire to which areinforcing covering is to'be secured. I ma however make use of theimprovements which I have described on a single side of the casing only.As will it 1s not necessary to remove the books from one another and anintermediate-eye, each of said hooks havlng'its arms hooked throughthebody of thetire'covering in a connection. It is, however, more convenient. ordinarily to remove the tire 'from the wheel before applying thereinforcing tread covering.

While I have illustrated certain forms In which my invention may beembodied, it is to be understood that the same are for the purpose ofaffording a clear understanding of my invention, and that the inventionis not confined to such specific iorm or forms except as specified by myclaim, and that a number of departures therefrom and modificationsthereinmay be resorted to wlthm the scope of said claim and withoutdepartmg from or sacrificing the advantages of my Invention.

. Having thus described my invention, claim: 1

A- continuous tread covering-f ora tire providedabout its m'argin with.a series of apertures arranged in pairs, a series of comprising hookedarms diverging pair of said Zapertures, a ring extending through theeyes, and means :Eor making the ring tight, substantially asset forth.

- In testimony that I claim the forego ng I hereto set my hand, this16th day of tember, 1915.

' JOHN F. JABLeNs.

